Workshop on Wireless Network Testbeds, Experimental evaluation & CHaracterization最新文献_第10页

A backoff copying scheme for contention resolution in wireless sensor networks 一种用于无线传感器网络争用解决的后退复制方案

Workshop on Wireless Network Testbeds, Experimental evaluation & CHaracterization Pub Date : 2009-09-21 DOI: 10.1145/1614293.1614309

Zhuxiu Yuan, Cuiyao Xue, Lei Wang, Yuanfang Chen, Weiping Sun, Lei Shu

{"title":"A backoff copying scheme for contention resolution in wireless sensor networks","authors":"Zhuxiu Yuan, Cuiyao Xue, Lei Wang, Yuanfang Chen, Weiping Sun, Lei Shu","doi":"10.1145/1614293.1614309","DOIUrl":"https://doi.org/10.1145/1614293.1614309","url":null,"abstract":"This paper aims at improving the throughput and fairness of the wireless sensor networks (WSN). Due to the disproportionate larger number of packets accumulated in the sensors that are closer to the base station, it's necessary to have a better contention resolution scheme to improve the throughput and fairness in WSN. In this paper, we propose a new mechanism named BCCR (Backoff Copying for Contention Resolution), which is targeted to a system-wide proportional fairness in WSN. The new method is designed particularly for a many-to-one data collection tree structure, employing a mechanism that translates a fairness model into contention resolution. In BCCR, the size of the backoff window is dynamically adjusted to the channel allocation rate of the flow sent by the sensors. And the backoff algorithm does not focus on each node, but focus on each region which is divided according to the traffic flow contention. In every contention region, sensor nodes will share the same backoff window by a copying scheme. With extensive simulations and testbed experiments, we show that BCCR can achieve the expected fairness and throughput increase over the traditional CSMA, especially when the network is congested.","PeriodicalId":239177,"journal":{"name":"Workshop on Wireless Network Testbeds, Experimental evaluation & CHaracterization","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117323182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Assessing mobility support in mesh networks 评估网状网络中的移动性支持

Workshop on Wireless Network Testbeds, Experimental evaluation & CHaracterization Pub Date : 2009-09-21 DOI: 10.1145/1614293.1614297

S. Annese, C. Casetti, C. Chiasserini, P. Cipollone, A. Ghittino, M. Reineri

引用次数: 6

Distributed localization, tracking, and automatic personal identification: a solution based on a wireless biometric badge 分布式定位、跟踪和自动个人识别:基于无线生物识别标识的解决方案

Workshop on Wireless Network Testbeds, Experimental evaluation & CHaracterization Pub Date : 2009-09-21 DOI: 10.1145/1614293.1614318

S. Tennina, L. Pomante, F. Graziosi, M. D. Renzo, R. Alesii, F. Santucci

引用次数: 1

Active capture of wireless traces: overcome the lack in protocol analysis 无线迹线主动捕获:克服协议分析的不足

Workshop on Wireless Network Testbeds, Experimental evaluation & CHaracterization Pub Date : 2008-09-19 DOI: 10.1145/1410077.1410086

Jae-Yong Yoo, Thomas Hühn, JongWon Kim

引用次数: 14

Insights from a freeway car-to-car real-world experiment 高速公路车对车现实世界实验的见解

Workshop on Wireless Network Testbeds, Experimental evaluation & CHaracterization Pub Date : 2008-09-19 DOI: 10.1145/1410077.1410088

K. Seada

{"title":"Insights from a freeway car-to-car real-world experiment","authors":"K. Seada","doi":"10.1145/1410077.1410088","DOIUrl":"https://doi.org/10.1145/1410077.1410088","url":null,"abstract":"Car-to-car communication is a promising technology for solving several real-life problems on the road. There is a growing research interest in this technology as one of the practical and challenging applications for wireless communication and multi-hop networks. Although there has been a decent amount of research in this topic recently, there is a lack of real-world experimental studies to augment this work. In this paper, we present results from a real-world experiment consisting of 10 cars making loops in a 5-mile segment of a freeway. Each car has a WiFi personal device communicating and forming multi-hop networks with the rest of the devices. By collecting measurements of connectivity and locations from these devices, and analyzing these measurements, we obtain some interesting observations about this environment. For instance, most connections forming in the freeway were between 15 and 30 seconds with a median of 23 seconds. The average distance at connections and disconnections was 133 meters and 500 meters respectively. The distance and relative velocity were observed to have a significant effect on connection forming and duration. Most connections formed were between cars in the opposite directions of the freeway rather than between those going in the same direction. We believe these results are indicative and useful for wireless protocol and application designers.","PeriodicalId":239177,"journal":{"name":"Workshop on Wireless Network Testbeds, Experimental evaluation & CHaracterization","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128646558","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 13

Peeling the 802.11 onion: separating congestion from physical per 剥开802.11洋葱:将拥塞从物理带宽中分离出来

Workshop on Wireless Network Testbeds, Experimental evaluation & CHaracterization Pub Date : 2008-09-19 DOI: 10.1145/1410077.1410085

M. Khan, D. Veitch

引用次数: 8

Building wireless mesh networks in forests: antenna direction, transmit power, and vegetation effects on network performance 在森林中建立无线网状网络:天线方向、发射功率和植被对网络性能的影响

Workshop on Wireless Network Testbeds, Experimental evaluation & CHaracterization Pub Date : 2008-09-19 DOI: 10.1145/1410077.1410097

Kuang-Ching Wang, G. Venkatesh, Sajindra Pradhananga, Sandeep Lokala, Shari Carter, Jason Isenhower, James Vaughn

引用次数: 6

A city-wide vehicular infrastructure for wide-area wireless experimentation 全市范围的车辆基础设施，用于广域无线实验

Workshop on Wireless Network Testbeds, Experimental evaluation & CHaracterization Pub Date : 2008-09-19 DOI: 10.1145/1410077.1410080

Justin Ormont, Jordan Walker, Suman Banerjee, Ashwin Sridharan, Mukund Seshadri, S. Machiraju

{"title":"A city-wide vehicular infrastructure for wide-area wireless experimentation","authors":"Justin Ormont, Jordan Walker, Suman Banerjee, Ashwin Sridharan, Mukund Seshadri, S. Machiraju","doi":"10.1145/1410077.1410080","DOIUrl":"https://doi.org/10.1145/1410077.1410080","url":null,"abstract":"We describe our experiences in building a city-wide infrastructure for wide-area wireless experimentation. Our infrastructure has two components -(i) a vehicular testbed consisting of wireless nodes, each equipped with both cellular (EV-DO) and WiFi interfaces, and mounted on city buses plying in Madison, Wisconsin, and (ii) a software platform to utilize these testbed nodes to continuously monitor and characterize performance of large scale wireless networks, such as city-wide mesh networks, unplanned deployments of WiFi hotspots, and cellular networks. Beyond our initial efforts in building and deploying this infrastructure, we have also utilized it to gain some initial understanding of the diversity of user experience in large-scale wireless networks, especially under various mobility scenarios. Since our vehicle-mounted testbed nodes have fairly deterministic mobility patterns, they provide us with much needed performance data on parameters such as RF coverage and available bandwidth, as well as quantify the impact of mobility on performance. We use our initial measurements from this testbed to showcase its ability to provide an efficient, low-cost, and robust method to monitor our target wireless networks. These initial measurements also highlight the challenges we face as we continue to expand this infrastructure. We discuss what these challenges are and how we intend to address them.","PeriodicalId":239177,"journal":{"name":"Workshop on Wireless Network Testbeds, Experimental evaluation & CHaracterization","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128120318","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 18

Understanding and modeling pedestrian mobility of train-station scenarios 火车站场景下行人移动性的理解与建模

Workshop on Wireless Network Testbeds, Experimental evaluation & CHaracterization Pub Date : 2008-09-19 DOI: 10.1145/1410077.1410096

Mingmei Li, S. Konomi, K. Sezaki

引用次数: 4

On topology creation for an indoor wireless grid 室内无线网格拓扑创建研究

Workshop on Wireless Network Testbeds, Experimental evaluation & CHaracterization Pub Date : 2008-09-19 DOI: 10.1145/1410077.1410093

G. Bhanage, Yanyong Zhang, I. Seskar

引用次数: 6